GB952565A - Improvements in or relating to hydrostatic transmissions - Google Patents

Improvements in or relating to hydrostatic transmissions

Info

Publication number
GB952565A
GB952565A GB10346/62A GB1034662A GB952565A GB 952565 A GB952565 A GB 952565A GB 10346/62 A GB10346/62 A GB 10346/62A GB 1034662 A GB1034662 A GB 1034662A GB 952565 A GB952565 A GB 952565A
Authority
GB
United Kingdom
Prior art keywords
pump
angle
motor
rams
maximum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB10346/62A
Inventor
Dennis Harris
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Motor Co Ltd
Ford Motor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Motor Co Ltd
Priority to GB10346/62A priority Critical patent/GB952565A/en
Priority to US261681A priority patent/US3157998A/en
Priority to DEF39164A priority patent/DE1284243B/en
Publication of GB952565A publication Critical patent/GB952565A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/423—Motor capacity control by fluid pressure control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/04—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit
    • F16H39/06—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type
    • F16H39/08—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type each with one main shaft and provided with pistons reciprocating in cylinders
    • F16H39/10—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type each with one main shaft and provided with pistons reciprocating in cylinders with cylinders arranged around, and parallel or approximately parallel to the main axis of the gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/433—Pump capacity control by fluid pressure control means

Abstract

952,565. Hydraulic transmission of power. FORD MOTOR CO. Ltd. Feb. 5, 1963 [March 19, 1962], No. 10346/62. Heading F2C. An hydrostatic transmission comprises a variable and reversible delivery pump C operating a variable capacity motor D, in which the pump and motor swashplates are actuated by follow-up double acting rams 11, 12, the ram valves 19, 20 being controlled by links 15, 16 extensible and compressible from their normal lengths and connected to lever arms 6, 7 simultaneously rotatable about a fixed pivot to operate the valves in a desired sequence. The lever arms 6, 7 are rotated by rack-andpinion mechanism 2, 3 and lever 1 such that the speed ratio is varied in a forward and reverse direction such that the pump swashplate angle is varied up to a maximum while the motor swashplate is maintained at maximum angle, followed by a reduction of the motor angle with maintainance of the pump angle at maximum as described in Specification 866,609. The maximum swashplate angles are determined by stops 21, 22, 23 which contact the valves 19, 20 of the servo-rams, the spring-loaded links 15, 16 allowing an over-centre movement corresponding to the neutral position, such that initial movement from the position first allows the link to return to normal length then to adjust the swashplate angle. The fluid for the rams may be derived from a fixed displacement pump, or from the transmission with or without a make-up pump, through a flow restriction. The rams may be fed in series or parallel.
GB10346/62A 1962-03-19 1962-03-19 Improvements in or relating to hydrostatic transmissions Expired GB952565A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB10346/62A GB952565A (en) 1962-03-19 1962-03-19 Improvements in or relating to hydrostatic transmissions
US261681A US3157998A (en) 1962-03-19 1963-02-28 Hydrostatic transmission control
DEF39164A DE1284243B (en) 1962-03-19 1963-03-05 Control device for hydrostatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10346/62A GB952565A (en) 1962-03-19 1962-03-19 Improvements in or relating to hydrostatic transmissions

Publications (1)

Publication Number Publication Date
GB952565A true GB952565A (en) 1964-03-18

Family

ID=9966161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10346/62A Expired GB952565A (en) 1962-03-19 1962-03-19 Improvements in or relating to hydrostatic transmissions

Country Status (3)

Country Link
US (1) US3157998A (en)
DE (1) DE1284243B (en)
GB (1) GB952565A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1286913B (en) * 1965-05-07 1969-01-09 Masch U Schlepperfabrik Xaver Control device for adjusting the primary and / or secondary part of a hydrostatic converter for driving motor vehicles
US3383857A (en) * 1966-05-24 1968-05-21 Borg Warner Hydrostatic transmission mechanism
US3374626A (en) * 1966-07-05 1968-03-26 Int Harvester Co Constant torque centering device for hydrostatic transmission control
US3412553A (en) * 1966-10-04 1968-11-26 Wright John Thomas Matthew Hydraulic transmission systems
DE1550839B1 (en) * 1966-10-20 1971-02-04 Lucas Industries Ltd Hydrostatic transmission
US3834164A (en) * 1972-01-26 1974-09-10 Kopat Ges Entwicklung Und Pate Hydrostatic torque converter
US3800535A (en) * 1973-02-07 1974-04-02 Eaton Corp Hydrostatic transmission control system
US4122757A (en) * 1976-02-03 1978-10-31 David P. McConnell Fluid operated engine
US9549504B2 (en) * 2008-06-06 2017-01-24 Kanzaki Kokyukoki Mfg. Co., Ltd. Transaxle system for vehicle
US10794480B2 (en) * 2014-08-07 2020-10-06 Kanzaki Kokyukoki Mfg. Co., Ltd. Control mechanism for stepless transmission
US10890252B2 (en) 2014-08-07 2021-01-12 Kanzaki Kokyukoki Mfg. Co., Ltd. Control mechanism for stepless transmission
US20160040691A1 (en) * 2014-08-07 2016-02-11 Kanzaki Kokyukoki Mfg. Co., Ltd. Control mechanism for hydrostatic transmission

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE591780C (en) * 1931-07-11 1934-01-26 Siemens Schuckertwerke Akt Ges Knee joint-like lever gear for reducing the number of strokes
DE716697C (en) * 1939-06-30 1942-01-27 Messerschmitt Boelkow Blohm Control device for dividing a switching movement into two separately removable switching movements
GB866809A (en) * 1957-03-09 1961-05-03 Council Scient Ind Res Improvements in or relating to the preparation of costus root oil and the products thereof
GB837998A (en) * 1958-01-08 1960-06-22 Keelavite Co Ltd Improvements relating to hydraulic motor systems

Also Published As

Publication number Publication date
DE1284243B (en) 1968-11-28
US3157998A (en) 1964-11-24

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